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Generalized photodiode self-calibration formula.

R Köhler, J Geist, J Bonhoure

    Applied Optics
    |June 29, 2010
    PubMed
    Summary
    This summary is machine-generated.

    We derived a new formula for silicon photodiode internal quantum efficiency using self-calibration experiments. This method accounts for oxide bias, reverse bias, and Auger recombination, correcting a previously published incorrect formula.

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    Area of Science:

    • Semiconductor Physics
    • Optoelectronics
    • Device Physics

    Background:

    • Accurate internal quantum efficiency (IQE) calculation is crucial for silicon photodiode performance evaluation.
    • Existing self-calibration methods may not fully account for all relevant physical effects.
    • Auger recombination significantly impacts IQE in silicon devices at higher carrier densities.

    Purpose of the Study:

    • To derive a robust photodiode self-calibration formula for accurate IQE calculation.
    • To incorporate the effects of oxide bias, reverse bias, and Auger recombination into a unified formula.
    • To validate the derived formula against existing methods and identify inaccuracies.

    Main Methods:

    • Development of a novel self-calibration formula for silicon photodiodes.
    • Integration of results from one, two, or three independent self-calibration experiments.
    • Inclusion of oxide bias and reverse bias experimental data.
    • Incorporation of calculated Auger recombination effects.

    Main Results:

    • A new photodiode self-calibration formula was successfully derived.
    • The formula accurately calculates internal quantum efficiency by considering multiple experimental conditions.
    • A significant discrepancy was identified with a previously published formula for these combined effects.

    Conclusions:

    • The derived formula provides a more accurate method for determining silicon photodiode IQE.
    • The new formula offers improved reliability for device characterization and performance prediction.
    • The study highlights the importance of accounting for Auger recombination and bias conditions in self-calibration.